Transformer and mounting therefor



Patented Nov. 1, 1927.

UNITED STATES PATENT orifice.

. VVLLY `DUlVIKE, OF CHICAGO, ILLINOIS, ASSIGNOR T0 HIGH` lREQUEJSI'CS.v LABORA- TORVIES, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.`

' i TRANSFORMERKAND MOUNTING frHnREroR.'

Application inea April 7,'

This invention relates to improvements in transformers and mountings therefor, and more especially to such a transformer and mounting of the type frequently employed in connection with radio apparatus, for eX- ainple, radio receiving sets. l The invention is particularly applicable to transformers of the radio frequency type.

My improved transformer is neat, simple, efficient, and rpleasing in design and appear-4 ance. A j

One of the features of my invention is to `provide a mounting for the transformer with improved terminals adapting it vfor quick and easy attachment to various radio units, for -example'directly to the terminals of tube socket-s, or directly to wires,either on the front or back of a panel. These features make the transformer practically universally adaptable for use in all .locations and under various circumstances.

Other features and advantages of lmy invention `will appear more fully as I proceed with my specification.

In that form of device embodying the features of my invention, shown in the accompanying drawings, Fig.,1 .is a view taken as indicated by the line 1 of Fig. 2, Fig. 2 is a top plan view. showing a portion of the cover removed, Fig. 3 is a vertical sectional view taken'through one of the terminals, showing the transformer mounted on the back of a panel and adapted for connection to a wire on the front of the panel, and Fig. 4 is atop `plan View of a portion, of the transformer, showing the same attached directly to the terminals of two tube sockets.

As shown in the drawings, the device comprises a substantially rectangular base plate 10,` made of any suitable insulating material, for example, bak-elite, hard rubber, libre, and the like,\provided with a hole 11 in each corner. These holes on the rear side are somewhat enlarged or countersunk, as indicated by 11a. There is also an additional hole 12 at each end of the plate in the center to be used in mounting the plate.

The primary and secondary coils of the transformer as indicated by 13,13a respectively, may be mounted upon the base plate 10 in any suitable mannen.- For example, these coils may be wound about awooden core 14 attached to the base plate 10 by means of the screws 15. The core 14 may in attaching a wire thereto.

1927. serial No. israel).

be Vpulled down to hold the condenser' 17' in pl'ace,f the screws 15 passing through'tubes v16 inside of the condenser.l Obviously, any other suitable means may be employed for `supporting the coils on the plate 10.

The particular manner of supporting the coils forms no part of the present invention VeX- cept as the same may be claimed in vcombination with other features. i j

The terminals of the ,coils are connected to flat sheet-metal terminal strips 18, one mounted at each corner of the plate 10`by means ofv the hollow rivets 19 in the holes The usual connections of the terminals of the coilsare made. For example, as here i' shown the terminals of the primary coil are connected to the terminal strips indicated by I) and B and those of the secondary coil lare connectedl to the `terminal'strips indicat-ed by G and F; such markings being the conventional markings on transformers of this type. rI`he end' of each of the terminal strips 18 is providedl with a hole 182L to assist It will be seen that since the terminal strips `18 project beyond the edge of the base 10, they maybe directly connected to the terminals of two adjacent tube socket-s. Thus connected, they are shown in Fig. l where 20, 2O indicate two tube sockets. It will be seen that the terminal strips P and G of the transformer are connected directly to two of the terminals ofthe adjacent tube sockets without `,the use of any connecting wires, thus pervinitting the connections to be madewithout any soldering. t

In Fig. 3 a portion of the transformerv is shown as mounted on the back of a panel 21. When thus mounted, a terminal of the trans-v former may be connect-ed to a Awire on the front of the panel in the following manner. The panel 21 is provided with a hole 22 adjacent the corresponding hole 11 of the transformer, and a small metal projection 23 may be fastened inthe ho-lell by means of the, bolt 211. A wire 25 on the front of the panel may be connected to the end of the part 23 projecting through the hole 22 `in the panel. j

It will be seen, that, in general,` each terminal of the transformer is provided with a strip 18 to which a wire may be soldered; and each such terminal is also in contact with a hollow rivet 19 lying in the hole 11.

There is thus provided a hole foreach terminal in which a bolt may be fastened to attach any wire or other part directly to the terminal by means of such bolt. The back` vof the hole 11 being countersunk, asindicated by 11a; prevents, the rear end of the rivet 19 from coming in contact with the panel 21 or other member upon which the base l0 may rest.

26 indicates a suitable cover for the coils vand condenser adapted to be suitably spaced tain embodiments of my invention, it is to be understood that it is capable of many modications. Changes, therefore; in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, in which it is my intention to claim al1 novelty inherent in my invention as broadly as possible in View of the prior art. What I claim as new; and desire to secure by Letters Patent, is:

1. A transformer comprising; a base plate of insulating material with four holes therethrough; a pair of coils; means on the base plate for supporting the coils thereon; a cover for the coils; mea-ns on the base plate for supporting the cover; four terminal pieces having their inner ends connected to the coil terminals and the outer ends projecting beyond the base plate; and means for attaching the terminal pieces to the base plate; said means lincluding hollow rivets extending through the holes in the base plate.

2. transformer comprising; a base plate of insulating material with four holes therethrough; a pair of coils; means on the base plate for supporting the coils thereon; a cover for the coils; means on the base plate for supporting the cover; four terminal pieces having their inner ends connected to the coil terminals; and means for attaching the terminal pieces to the base plate; said means including hollow rivets extending through the holes in the base plate.

3. A transformer comprising; a base plate of insulating material with four holes therethrough; a pair of coils; means on the base plate for supporting the coils thereon; a cover fm` the coils; means on the base plate for supporting the cover; four terminal Vpieces having their inner ends connected to the coil terminals and the outer ends pro- Apieces having their inner ends connected to the coil terminals; and means for attaching lthe terminal pieces to the base plate; said lmeans including hollow rivets extending through the holesr in the base plate, the rear ends of the rivets being countersunk in the base plate.

5. A transformer comprising; a base plate -ofinsulati'ng material with four holes therethrough; a pair of coils; means on the base plate for supporting the coils thereon; a cover for the coils; means on the base plate for supporting the cover; four ilat sheetmetal terminal strips having their inner ends connected Ato the coil .terminals and the outer ends projecting beyond the base plate; and means for attaching the terminal strips to the base plate7 said means including hollow rivets extending through the holes in the base plate.

G. A transformer comprising; a base plate of insulating material with four holes therethrough at the corners; a pair of coils; means on the base plate for supporting the coils thereon; a. cover for the coils; means on the base platefor supporting the cover; four terminal pieces having their inner ends connected to the coil terminals and the outer ends projecting beyond the base plate; and means for attaching the terminal pieces to the base plate; said means including hollow rivets extending through the holes in the base plate.

7. A transformer comprising; a base plate of insulating material with four holes therethrough; a pair of coils; means on the base plate for supporting the coils thereon; a cover for the coils; means on the base plate for supporting the cover; four terminal pieces having their inner ends under the cover and 4connected to thecoil terminals and the outer .ends projecting beyond the base plate; and means for attaching the termina-l pieces` to the base plate; said meansincluding hollow rivets extending through the holes in the base plate.

In witness whereof; I have hereunto set my hand and seal this 5th day of April, 

